Headset



FIG. 1 is a bottom front perspective view of a headset showing my design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

CLAIM The ornamental design for a headset, as shown and described. 